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Cold compression test
Hi
I know that a compression test should be done on a warm engine, but yesterday I did one for the first time when I changed my plugs, see thread http://forums.pelicanparts.com/showthread.php?threadid=356768. But does a cold test have any value? I got some pretty lousy results (I'm at sea level): #1 110 psi #2 140 #3 140 #4 120 #5 142 #6 110 Then I put some oil in the cylinders #1 130 #2 150 #3 150 #4 135 #5 145 #6 142 But I don't know if the oil sealed bad rings or just a cold engine, do I? And yes, I should probably perform a proper leak down test.
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Magnus 911 Silver Targa -77, 3.2 -84 with custom ITBs and EFI. 911T Coupe -69, 3.6, G50, "RSR", track day. 924 -79 Rat Rod EFI/Turbo 375whp@1.85bar. 931 -79 under total restoration. |
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Air Medal or two
Join Date: Jul 2003
Location: cross roads
Posts: 14,206
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Why not do a hot comp. test ????
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162 Assault Helicopter Co,(Vultures ) D troop 3/5 Air Cav. ( Bastard CAV) South of Saigon, U Minh Forest, Delta, and most parts in between. |
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Convenience, I had all plugs removed...
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Magnus 911 Silver Targa -77, 3.2 -84 with custom ITBs and EFI. 911T Coupe -69, 3.6, G50, "RSR", track day. 924 -79 Rat Rod EFI/Turbo 375whp@1.85bar. 931 -79 under total restoration. |
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